Improvement in wind-wheels



HENRY r. Meer-nava or roMALns, CALIFORNIA.

'Letters Patent No. 97,665, dated December 7, 1869.

IMPROVEMENT IN WIND-WEEELS.-

The Sohednlerefen'ed to in `those Letterslatent and making pai't'bf thename.

`to make and` use my said invention or improvement,

without furtherinvention vor experiment.

My invention relates to windmills, and consists principally in animproved manner of constructing the vanes composing the wheel, so that.the efficiency of the mill is much increased; This is eiected by formving the venes, triangularly, `of metal, and bending one of the outercorners of each vane down toward the centre, where the third corner issecured, and holding the corner so bent by straps of iron. Braces extendforward from the outer Vends of the yanesto a central rod, by' whichthey are firmly supported. 'I

Referring to the accompanying drawings fora more complete explanation ofmy invention-- Figure 1 is a `front View of the wheel. Figure 2 is aside view. M A A are suitable arms, of wood, to which the vanes arefastened, and which arel braced laterally, as at B. Any suitable numberof vanes may be used, but in the presentdrawngs four only are shown.

The vanes consistoi' triangular metallic plates, a, scout, that whenlaid flat, they will make a figure with as many sides'as there are arms.v OneY side of thetriangle is laid on the arm A, so

` that the interior point G is near the centre, and is then `firmlyfastened, along the arm, to the outer point D, which7 when all arefastened to their respective arms, will leave the alternate exteriorcorners free. These corners are then bent inward toward the 'centralpoint C, so as to form a curve, as at E.

Straps of-'ir.on,1-If",.arccnrved,l to t the bent edge E of each vane,andso strengthen and hold it in place.

The shaft G is extended ont in front of the wheel, i

and carries at its extremity, across, H, to which one end ofthe braces II is fastened. The other end passes through the vanes and the arms A,near the outer ends, so as to brace them firmly.

The brake` J ifs operated by a rope, 4K, so as to check the speed'of themill when desirable, and is kept from contact with the shaft, when notIin use,:-by the spring L. y

Thiswheel is strong, cheap, and durable, and will run well fronting thewind, or with the side toward it, but can be entirely stopped bytumingthe back toward the Wind. l

Having thus described my invention,

I hat I claim .as new, and desire tov secure by Letters Patent, is

A Wind-wheel, composed of the Vanesa, forming the curve E, andconstructed substantially as herein described.

Inwitness whereof, I have hereunto'set my hand and' seal. Y

, HENRY P. MCGLEAVE. [L. s.]

Witnesses: WILLIAMv OAMM,

JOHN LITLE.

